Their cases may not command the high profile of abortion, immigration, affirmative action and other challenges now on the U.S. Supreme Court’s decision docket. But four tribal cases granted review by the justices have been called by some experts a “potential watershed” term for Indian law.

The cases raise issues ranging from the jurisdiction of tribal courts over non-Indians, including corporations, to legal battles over the boundaries of reservations still contested more than a century after Congress has acted.